Combined tanks and supporting structure for waterblast apparatus



FIG. 1 is a perspective view of the combined tanks and supporting structure for waterblast apparatus showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is an end elevational view taken from the right of FIG. 1;

FIG. 4 is an end elevational view taken from the left of FIG. 1;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof, the bottom being unornamented. 

The ornamental design for combined tanks and supporting structure for waterblast apparatus, as shown and described. 